TY - JOUR AU - V. M. Volosov TI - Periodical solutions of a non-linear equation of autooscillations JO - Doklady Akademii Nauk PY - 1957 SP - 20 EP - 22 VL - 115 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1957_115_1_a3/ LA - ru ID - DAN_1957_115_1_a3 ER -